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Atomic beam magnetometer

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Abstract

The application of a novel atomic beam magnetic resonance technique to the measurement of magnetic fields is described. The technique has been used previously in electric field experiments to determine the upper limit to the permanent electric dipole moment of the cesium atom. Two different electric field modulation schemes were used which demonstrate the sensitivity of the technique. In one scheme (sinusoidal modulation) the sensitivity to magnetic field changes is inferred; in the second scheme (squarewave modulation) small magnetic field changes were measured directly.

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Abbreviations

c :

velocity of light

g F :

atomic g-factor

h :

Planck's constant

m F :

magnetic quantum number

v :

velocity of atomic beam

E :

uniform electric field

F :

total angular momentum vector of an atom

H 0 :

uniform static magnetic field

H 1 :

weak magnetic field which is to be measured

H y :

y component of H 0

H z :

z-component of H 0

S :

detector signal

δS :

change in detector signal produced by H 1

∂S/∂ν B :

change in detector signal per unit change in the Bohr resonance frequency

α :

angle between H 0 and H 1

δν B :

shift in the Bohr resonance frequency produced by H 1

μ 0 :

Bohr magneton

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Authors and Affiliations

  1. General Science and Technology Laboratory, Bendix Research Laboratories, 48076, Southfield, Mich., USA

    J. P. Carrico

  2. Dept. of Physics, Wayne State University, 48202, Detroit, Mich., USA

    T. S. Stein

Authors
  1. J. P. Carrico
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  2. T. S. Stein
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Carrico, J.P., Stein, T.S. Atomic beam magnetometer. Appl. Sci. Res. 28, 198–206 (1973). https://doi.org/10.1007/BF00413067

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  • DOI: https://doi.org/10.1007/BF00413067

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